Baptists touya



(N0 Modl.)

2 Sheets-Sheet 1. TOUYA.FILS. GRINDING MILL Patentd May-3'1, 1887.

UNITED STATES PATENT OFFICE.

BAPTISTETOUYA, FILS, OF TARBES, FRANCE.

GRINDING-MILL.

SPECIFICATION forming part of Letters Patent No. 364,145, dated May 31,1887.

Application filed September22,1886. Serial No. 214,2l8. (No model.)Patented in France February 4, 1886, No. 173,957; in

Belgium May 14,1886, No. 73,123; in Luxembnrg May 14, 1886, No. 65st; inSpain May 20, 1886, No. 9,489; in Ita y June 24, V

1886, No. 20,124, and in Portugal June 28, 1886, No. 12.

To all whom it may concern.-

Be it known that I, BAPTISTE TOUYA, Fils, a citizen of the FrenchRepublic, residing at Tarbes, in the said French Republic, have in 5vented certain new and useful Improvements in Grinding-Mills, (for whichI have obtained Letters Patent in France, No.173,957, under date ofFebruary 4, 1886; in Belgium, No. 73,123, dated May 14, 1886; inSpain,N0. 9,489, dated May 29, .1886; in Portugal, N o. 12,dated June28, 1886; in Italy, No. 20,124, dated June 24:, 1886, and inLuXemburg,No. 68l,dated May 14, 1886;) and I do declare the following tobe a full, clear, and exact description of the invention, such aswillenable others skilled in the art to which it appertains to make and usethe same, reference being had to the accompanying drawings, and to theletters of reference marked thereon, which form a part of thisspecification.

Referring to the drawings, Figure l is a partly-sectional frontelevation of acentrifugal grinding-mill embodying my improvements. Fig.2 is an end elevation thereof. Figs. 3 and 4 are plan views of thegrinding-disks, shwing the dress thereof and arrangement of thegrinding-pins. Figs. 5 and 6 are like views ofportions of said disks ona larger scale. Fig.

-7 is a detached detail section of a portion of the mill, showing themanner in which the grinding-disks are arranged, also drawn to anenlarged scale. Fig. 8 is a like view of one of the bearings for thedriving-shafts.

The object of this invention is toincrease the efficiency of this classof mills and toprovide a friction driving mechanism for one of thegrinding-disks and improved bearings for the driving-shafts.

To these ends the invention consists in certain novel features ofconstruction and in the combination of parts, substantially ashereinafter fully described, and as set forth in the claims.

In the drawings, B is the base upon which the mill ismounted; G, acylinder firmly secured to or formed on said base and provided at itsupper end with an annular flange, c, from which is supported a disk, D,that has an axial bearing, (Z, for a Vertical shaft or spindle, S. TheshaftS is stepped on the bottom of the cylinder 0; or said shaft maypass through said bottom to a step on the base B, and has a collar, 8,uponwhich is seated the revoluble grinding-disk A, which is firmly keyedtoor otherwise secured on shaft S.

Above the grinding-disk A is arranged the stationary grinding-disk A,which is firmly bolted to a flange, d, of a ring, D, which latter isbolted to, or it may be formed on,disk D.

The grinding-disks A and A have each a series of concentric grooves, 1aand a, respectively, formed in their juxtaposited faces, theconcentriegrooves a of the stationary grinding-disk A facing theconcentric ridges or walls b, intervening between the concentric groovesa of the revoluble grinding-disk A, while the grooves a in the face ofthe latter grinding-disk face the ridges b in the stationary disk A, asmore plainly shown in Figs. 5, 6, and].

From the ridges b and b of the disks Aand A proj ectsteel pins 1) and p,respectively, so that the concentric rows of pins p on disk A will movein the grooves a of disk A. These pins and the surfaces of the alternategrooves and ridges constitute the grinding-surfaces between which thematerial is ground, said material being fed centrally of the disks, forwhich purpose the stationary disk A has an enlarged axial opening, 0,through which the shaft S passes, and around which shaft the material isfed between the -disks, the ground material passing out at o.

E E are two chairs bolted to the disk D and the flange cof the cylinderO.- Each of said 3 chairs has two bearings, e e and e e, respectively,for two short shafts, S S, in the outer ends of which are formed conicalrecesses for the reception of cone-pins H. The two chairs E E areconnected by means of a yoke, Y, bolted to said chairs, to brace thesame firmly together, and in said yoke are formed openings 3 for pillowor bearing blocks F F which I make, preferably, of cylindrical form. Thebearing-blocks F F are arranged to slide endwise in the openings y, andare chambered for the reception of a sphere of steel, G, and a steelcone-pin, H, having a semi-cylindrical head, h, Fig. 8, bearing upon thesphere G. A rolling bearing is thus provided for the end of the too pin,so that in case the latter should be rotated by friction with thedriving-shaft the friction between the end of the pin and the spherewill be reduced to a minimum. The bearing-blocks project slightly beyondthe openings y, and strong springs I are made to bear upon saidprojecting end, the degree of pressure exerted by the springs beingregulated by means of set-screws K.

The shafts S S carry each a belt-pulley, P P, mounted on said shaftsbetween the bearings e c and e e of the chairs E E, respectively, and attheir inner ends said shafts carry each a cone-wheel, \V W, infrictional contact with the cone-wheel WV on the upper end of the shaftS, the said wheels forming a friction-gear for rotating the shaft S andthe revoluble grinding-disk A. Of course it will be understood that thebelt-pulleys are belted to the prime motor by a straight and cross belt,respectively, to rotate the friction wheels W W on opposite sides ofcone-wheel \V in reverse directions.

By means of the set-screws K, the wheels W W may be readily moved intoor out of contact with the cone-wheel W and the degree of frictionbetween them regulated.

Having thus described my said invention, what I claim, and desire tosecure by Letters Patent, is-

1. Thecombination,with the shaftsSS,having their outer ends providedwith conical recesses' or seats, of pins having inner conical endsseated loosely in said recesses, chambered bearing-blocks for said pins,the frame of the mill having bearings for the blocks, means forimparting yielding pressure to said blocks to hold the pins to theirseats in the outer ends of the shafts, and a rolling bearing within thesocket of the blocks, against which the heads of the conical pins abut,substantially as and for the purpose specified.

2. The combination,\vith the shafts S Sflhav ing conical recesses intheir outer ends, the chairs E E, provided with bearings for saidshafts, and the brace-yoke Y, connecting the chairs, of chamberedbearing-blocks fitted in the yoke and arranged to move endwise therein,cone pins fitted in said bearing-blocks and held therein by frictionalcontact, said pins seating in the conical recesses in the outer ends ofthe shafts, balls arranged in the bear ing-blocks in rear of thecone-pins, and adjustable springs to hold the bearing-blocks'againstendwise motion, substantially as and for the purpose specified.

3. An improved mill comprising the cylinder 0, disk D, the stationarygrinding-disk A, the shaft S, the grinding-disk A, and conewheel W,mounted thereon, of the chairs E E, the yoke Y, the shafts S S", thecone-wheels W W,operating 011 opposite sides of the conewheel WV, andthe driving-pulleys P P on said shafts, said parts being constructed andoperating substantially as described, for the purposes specified.

In testimony that I claim the foregoing I have hereunto set my hand this8th day ofSeptember, 1886.

' BAPTISTE TOUYA, Firs.

